Ophthalmological combination instrument for diagnosis and treatment

US4582405A · kind A · utility

Assignee

• Carl Zeiss Stiftung · DE

Inventors

• Ortwin Muller · Aalen, DE
• Kurt S. Schulz · Williston, US
• Albrecht Vogel · Oberkochen, DE
• Gerhard Hanemann · Oberkochen, DE
• Gerhard Muller · Grafing, DE
• Gunther Kurbitz · Oberkochen, DE
• Arnold Guttner · Königsbronn, DE

Key dates

• Filing date: Aug 27, 1984
• Grant date: Apr 15, 1986
• Expiry date: Aug 27, 2004

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2009/0035
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An Nd:YAG laser of small size with a passive quality switch is combined with a slit-lamp instrument, to form an ophthalmological combination instrument for diagnosis and treatment. By a plurality of pulses within a pulse train, which succeed each other within the .mu. sec range, particularly good therapeutic effects are obtained. A second laser, emitting continuous visible radiation, has its beam aligned with the beam of invisible radiation from the first laser, and shows the user at all times the location of the beam of invisible radiation. The visible beam of radiation is split into two beams separated from each other by a light-free zone, and there is provision for blocking and unblocking these two beams alternately, which produces an effect which greatly aids the user in accurate focusing. This combination instrument affords the user the possibility of making a diagnosis and following it immediately by treatment.